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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013, Google Inc.
*/
#include <common.h>
#include <log.h>
#include <malloc.h>
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
#include <image.h>
#include <u-boot/ecdsa.h>
#include <u-boot/rsa.h>
#include <u-boot/hash-checksum.h>
#define IMAGE_MAX_HASHED_NODES 100
struct checksum_algo checksum_algos[] = {
{
.name = "sha1",
.checksum_len = SHA1_SUM_LEN,
.der_len = SHA1_DER_LEN,
.der_prefix = sha1_der_prefix,
.calculate = hash_calculate,
},
{
.name = "sha256",
.checksum_len = SHA256_SUM_LEN,
.der_len = SHA256_DER_LEN,
.der_prefix = sha256_der_prefix,
.calculate = hash_calculate,
},
#ifdef CONFIG_SHA384
{
.name = "sha384",
.checksum_len = SHA384_SUM_LEN,
.der_len = SHA384_DER_LEN,
.der_prefix = sha384_der_prefix,
.calculate = hash_calculate,
},
#endif
#ifdef CONFIG_SHA512
{
.name = "sha512",
.checksum_len = SHA512_SUM_LEN,
.der_len = SHA512_DER_LEN,
.der_prefix = sha512_der_prefix,
.calculate = hash_calculate,
},
#endif
};
struct padding_algo padding_algos[] = {
{
.name = "pkcs-1.5",
.verify = padding_pkcs_15_verify,
},
#ifdef CONFIG_FIT_RSASSA_PSS
{
.name = "pss",
.verify = padding_pss_verify,
}
#endif /* CONFIG_FIT_RSASSA_PSS */
};
struct checksum_algo *image_get_checksum_algo(const char *full_name)
{
int i;
const char *name;
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
static bool done;
if (!done) {
done = true;
for (i = 0; i < ARRAY_SIZE(checksum_algos); i++) {
checksum_algos[i].name += gd->reloc_off;
checksum_algos[i].calculate += gd->reloc_off;
}
}
#endif
for (i = 0; i < ARRAY_SIZE(checksum_algos); i++) {
name = checksum_algos[i].name;
/* Make sure names match and next char is a comma */
if (!strncmp(name, full_name, strlen(name)) &&
full_name[strlen(name)] == ',')
return &checksum_algos[i];
}
return NULL;
}
struct crypto_algo *image_get_crypto_algo(const char *full_name)
{
struct crypto_algo *crypto, *end;
const char *name;
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
static bool done;
if (!done) {
crypto = ll_entry_start(struct crypto_algo, cryptos);
end = ll_entry_end(struct crypto_algo, cryptos);
for (; crypto < end; crypto++) {
crypto->name += gd->reloc_off;
crypto->verify += gd->reloc_off;
}
}
#endif
/* Move name to after the comma */
name = strchr(full_name, ',');
if (!name)
return NULL;
name += 1;
crypto = ll_entry_start(struct crypto_algo, cryptos);
end = ll_entry_end(struct crypto_algo, cryptos);
for (; crypto < end; crypto++) {
if (!strcmp(crypto->name, name))
return crypto;
}
/* Not found */
return NULL;
}
struct padding_algo *image_get_padding_algo(const char *name)
{
int i;
if (!name)
return NULL;
for (i = 0; i < ARRAY_SIZE(padding_algos); i++) {
if (!strcmp(padding_algos[i].name, name))
return &padding_algos[i];
}
return NULL;
}
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